数据碰撞

CREATE TABLE example (
    id INT PRIMARY KEY,
    name VARCHAR(255) NOT NULL
);

UPDATE example SET name = 'newName', version = version + 1 WHERE id = 1 AND version = currentVersion;

BEGIN;
SELECT * FROM example WHERE id = 1 FOR UPDATE;
-- 执行更新操作
UPDATE example SET name = 'newName' WHERE id = 1;
COMMIT;

import hashlib

def verify_data(data, expected_hash):
    actual_hash = hashlib.sha256(data).hexdigest()
    return actual_hash == expected_hash

from redis import Redis
from redlock import Redlock

redis_client = Redis()
dlm = Redlock([{"host": "localhost", "port": 6379, "db": 0}])

lock = dlm.lock("resource_name", 1000)
if lock:
    try:
        # 执行数据操作
    finally:
        dlm.unlock(lock)